Vibrator.



No. 886,443. PATENTED yMAY 5, 1908.

E. M. TORMIN.

VIBRATOR. APPLIUATION FILED JAN. 23, 1908.

UNITED sTATEs PATENTI oFFioE..

i vEGMONTMMAX TOItMIN, QF NEWTON, MASSACHUSETTS, ASSIGNOR TO HOLTZER-CABOT ELECTRIC COMPANY, A CORPORATION OF MASSACHUSETTS.

y VIBRATOR.

Specication of Letters Patent.

Patented May 5, 1908.

Application led. January 23, 1908 Serial No. 412,300.

To all 'whom 'it may concern."

Be it known that I, EMoNT-MAX TORMIN, a subject of the Emperor of Germany, residing in Newton, in the county of Mlddlesex and State of Massachusetts, have invented an Improvement in Vibrators, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

The present invention relates to a vibrator and is embodied in a vibrator for use with an induction coil.

The invention relates mainly to the 'arrangement of the circuits through the vibrator and the primary ofv the transformer whereby currents of great intensity can be vhandled without sparking at the vibrator terminals.

In accordance with the invention, the primary. coil and' the high resistance electromagnetic coils which cause the vibration of the armature or vibrating member are in series, and a condenser is employed in'parallel with this circuit, which is continually closed.

The denergizing of the electro magnet to release the armature after the-same has been attracted' is-caused by short circuiting the -electro magnet coils which are necessarily ofy high resistance, the vibrating member serv- -ing as a low resistance path for the current the electro-magnetic coils" are located ibe` tween the divisions of said windingwhile the conductors leading through the condenser are connected with the maln circuit at points between the divisions ofthe primary winding and the electro-magnetic windings. In the preferred iorm, the arran ement is,r such that thc low resistance shunt c osed by the vibrating. armature is broken at two points when the armature is released.

The drawing is a diagram of the circuits employed in accordance with the invention.

ln the construction shown, the secondary coil A is wound on one side of a core A2, the other` side of which receives the prima winding A3, A, the arrangement of whic will be hereinafter described. l y

While the transformer is show vided [with the rectangular core A2; it is to be mdcrstood Ithat other forms of transformer as promay be employed without departing from the invention which relates mainly to the arrangement of circuits through the primary coil and the vibrator.

The primary coil-is shown as divided into two sectionsA3 and A, the terminals of the two windings being indicated as connected with binding `osts 1, ,2, 3 and 4. The binding post lr is s own as connected by means of a conductor 5 with the positive terminal ofy the source of current B, while the binding post 4 is shown as connected by means of a conductor 6 with the negative terminal thereof. In order' to change -the steady :flow of current from the battery B into an intermittent or pulsating current so as to induce a current in the secondary A, a vibrating circuit controlling mem'bei a is employed, the said vibrating member being connected with an armature a2 and with contact members a3, such as platinum points arrangedwhen the armature a? is attracted to be' brought into contact with stationar terminals' b. It is to be noted that, by t 's arrangement, the circuit controlledby the armature is broken at two oints, this arrangement, whilel not essentia having practical-advantages. The armature a? is in the ma etic field of an electro-magnet 'c energize .by means of a high resistance windingc2 whichreceives the current through conductors 7 and 8 connected, respectively, with the bindin and 3. The current flowing-from t e source B, therefore, passes through the prima winding A3, the magnetic coils cz and the x12-r posts "2 mary-winding A4 back to the battery,tnus

ener izing the electro-magnet c and attractingrt e armature a. y

he member a, winch carnes the contacts a?, is made of conducting material of suiiicient 9 size to aord comparatively slight resistance to the flow oiV current, 1t beingl obvious, therefore, that when theterminals a.i come in .contact with the terminals b, the coils c2 will be short circuited andthe electro magnet c .be denergized. The member a, is normally vheld out of .contact with the terminals b, as by a spring a4, so that it willbe withdrawn means of conductors 9 and sparking, a condenser d is employed, the said condenser being shown as connected by l0 with the binding posts 2 and 3, the said condense@ obviously .being in multiple with the main battery circuit as Well as with the circuit through the electro ma net c, and in a circuit which is permanently c osed.

Claims.

1. In a vibrator, the combination with a secondary transformer winding; of a primary transformer Winding divided 'into two coils; an electro-magnet the 'winding of which' is in series with said coilsand located between the same; and a vibrating circuit-controlling member in the field of said electro-magnet.

2. 'A source of' current a divided primary coil, the windings of which are connected respectively with the positive and negative l terminals of said source', an electro-magnet 20 name to this specification in two subscriblng wltnesses.

is in series-with said ted when attracted said winding.

3. The combination with a primary transformer winding of an electro-magnetic Winding in series therewith, the said .windings being permanentl)r closed and a condenser in multiple with sind circuit.

circuit through 3G In testlmony whereof, I have signed my the presence of EGMONT MAX' TORMIN. Witnesses:

JAS. J. MALONEY, M. E. CovENEY. 

